-Hi, this is my first post in this Newsgroup and part of my first real
-look at embedded systems.
Hi, your post is all over the place. KISS: Keep It Simple Steven.
-
-I'm reading the excellent book Designing Embedded Hardware and in the
-chapter 'Building It' it's suggested that it is best to use PCBs,
-especially multilayered ones, that are professionally made. As a budding
-home hobbyist who is also doing a Foundation Degree in Electronic and
-Computer systems, who'd like to build a small computer, I can't afford
-the expence of professionally made PCBs.
Then don't worry about it for starters. My experience is that using PCBs for development is dicey at best, though it's great for a finished product.
- The sort of processors I'd like
-to start with are Z80s or PIC16F877s, later possibly moving up to 68000s
-etc.
Again all over the place. There are two competing issues when choosing platforms: what will do the task and how well do you know the platform. Out of the three listed above the KISS principle would lean towards the PIC. It's by far the simplest part to develop with. The problem is that once you get to know it well, you'll get into a situation where you'll try to solve every problem with it.
BTW if you're going to do PICs, I'd advise starting with the 18F series. A good part to start with is the 18F4320 which has all the features a hobbyest would want.
- What would anyone suggest I use for prototyping home made hobbyist
-projects.
Personally I prototype with wire wrap. Cheap, simple, effective, and sturdy enough for prototyping. Then look to PCBs for finished product.
-
-At my Uni, eventually PCBs are made for complete projects, but also
-matrix boards are often used for prototyping.
Breadboards? Fine for lashing up something quickly, but flimsy. One loose wire and a project stops working.
-Also, what about the copper strip boards,
Not as flexible as wire wrap but another good alternative.
- finally would etching my own PCBs be a good idea,
-or would this be just as expensive as Professional boards?
Of course. It's more hassle then sending boards out, but it'll be cheaper in the long run.
-
-Thank you for your time
-Steven Graham
-
-P.S. I've done some googling and Prototype 4 Layer Professionally made
-PCBs are a good £300, which for a student's home hobby project is a bit
-much :-)
Of course. But you don't need 4 layer boards. 1 or 2 layer boards from places like
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or
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will work just as effectively.
I've found I'm not diciplined enough to implement a complete design and execute it on a PCB without prototyping first. That's why all of my projects start with wire wrap until it stabilizes.
BAJ